JPH09197073A - Device for shielding electromagnetic wave of mat - Google Patents

Device for shielding electromagnetic wave of mat

Info

Publication number
JPH09197073A
JPH09197073A JP8291574A JP29157496A JPH09197073A JP H09197073 A JPH09197073 A JP H09197073A JP 8291574 A JP8291574 A JP 8291574A JP 29157496 A JP29157496 A JP 29157496A JP H09197073 A JPH09197073 A JP H09197073A
Authority
JP
Japan
Prior art keywords
potential difference
grounding
mat
relay
power
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP8291574A
Other languages
Japanese (ja)
Inventor
Han Rii Mon
モーン・ハン・リー
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SEMO CO Ltd
Original Assignee
SEMO CO Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by SEMO CO Ltd filed Critical SEMO CO Ltd
Publication of JPH09197073A publication Critical patent/JPH09197073A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G12INSTRUMENT DETAILS
    • G12BCONSTRUCTIONAL DETAILS OF INSTRUMENTS, OR COMPARABLE DETAILS OF OTHER APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G12B17/00Screening
    • G12B17/02Screening from electric or magnetic fields, e.g. radio waves
    • AHUMAN NECESSITIES
    • A47FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47CCHAIRS; SOFAS; BEDS
    • A47C31/00Details or accessories for chairs, beds, or the like, not provided for in other groups of this subclass, e.g. upholstery fasteners, mattress protectors, stretching devices for mattress nets
    • A47C31/004Means for protecting against undesired influence, e.g. magnetic radiation or static electricity

Landscapes

  • Looms (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Details Of Measuring And Other Instruments (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a device for shielding electromagnetic wave of mat, eliminating more completely the uncomfortable state caused by electromagnetic wave and potential difference by providing a power code with three cables having a ground terminal and a transformer of which primary and secondary powers are separated. SOLUTION: The characteristics of this device is to use a power code 10 with three cables having a ground terminal and to assure more stable voltage and detect exact electric potential by using a transformer 30 of which primary and secondary powers are separated. For executing the process, the power supplying to a mat is completely cut with a relay part 20, and the electric potential difference between input power sources is read through an input power electric potential difference sensing part 40. Also, grounding method is selected through a grounding sensing part 50 of a power output and the electric field induced by a shielding cloth 60a is grounded. The grounding effect is raised by making the thickness of the insulator 60b 5mm or more. The control is executed in turn using a microcontroller 70.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、本体の内部に電熱
装置を有するマットに適用される電磁波遮蔽装置に関す
る。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electromagnetic wave shielding device applied to a mat having an electric heating device inside a main body.

【0002】[0002]

【従来の技術及び発明が解決しようとする課題】一般的
に、家庭に供給される電源は、単相2線式と、単相3線
式に大別される。単相2線式の一方の線はグラウンド電
位とほぼ同じ電位が供給され、他方の線には、グラウン
ド電位を基準として、通常110Vまたは220Vの電
位が供給されている。単相3線式は、1つの線はグラウ
ンド電位とほぼ同じ電位が供給され、残りの2つの線に
はそれぞれ110Vが供給されており、結線を選択する
ことで、110Vまたは220Vの電位を供給すること
ができる。電磁波を発生する電熱装置を有するマット類
を使用する際、その電位差により不快な現象を感じるこ
とがある。このマット類に現れる電位の状態は、その接
地方法によって電位差が異なるが、このような状態を除
去する方法の中で最も好ましい方法は、マットの上段に
遮蔽布を敷き、この遮蔽布に誘導される電界をアース接
地させることである。ここで問題は、通常、家庭に供給
されている電源には、アース接地されていない場合が多
いことである。現在、上記の問題を解決するため、供給
されている電源の中のグラウンド電位とほぼ同じ電位を
見つけて接地することにより遮蔽布に誘導される電界強
度を弱くする制御機器を、商品として製造及び販売して
いる。しかし、上記制御機器では、最も好ましい接地方
式であるアース接地を無視し、無条件に供給される電源
に依存して仮想接地を行う方式を採用している。また、
この仮想接地は、ネオン(Neon)センサを用いて入
力電源の電位差を比較し、低い電位を選択接地する方式
を採用する。このネオン(Neon)センサは、放電電
圧と遮蔽電圧が異なり、更にセンサ毎に特性が異なるた
め、感知方法に多くの問題がある。このため、誤動作を
起こし、逆に高い電位に接地してしまうことにより気持
ち悪い状態を増加させる要因として作用する場合があ
る。
2. Description of the Related Art Generally, a power source supplied to a home is roughly classified into a single-phase two-wire type and a single-phase three-wire type. One line of the single-phase two-wire system is supplied with a potential substantially the same as the ground potential, and the other line is generally supplied with a potential of 110 V or 220 V with reference to the ground potential. In the single-phase three-wire system, one line is supplied with almost the same potential as the ground potential, and the remaining two lines are supplied with 110V, respectively, and 110V or 220V is supplied by selecting the connection. can do. When using mats having an electric heating device that generates electromagnetic waves, an unpleasant phenomenon may be felt due to the potential difference. The state of potential appearing on the mats differs depending on the grounding method, but the most preferable method of eliminating such a state is to lay a shielding cloth on the upper stage of the mat and guide it to this shielding cloth. The electric field is to be grounded. The problem here is that the power supply that is normally supplied to the home is often not grounded. Currently, in order to solve the above problem, a control device that weakens the electric field strength induced in the shielding cloth by finding and grounding a potential approximately the same as the ground potential in the supplied power source is manufactured and commercialized. Are on sale. However, the above-mentioned control device adopts a method of ignoring the earth grounding which is the most preferable grounding method and performing virtual grounding depending on an unconditionally supplied power source. Also,
This virtual grounding employs a method of comparing the potential difference of the input power source using a Neon sensor and selectively grounding a low potential. This neon sensor has many problems in the sensing method because the discharge voltage and the shield voltage are different and the characteristics are different for each sensor. For this reason, a malfunction may occur, and on the contrary, grounding to a high potential may act as a factor to increase the unpleasant state.

【0003】本発明の目的は、安楽な就寝及び休息をと
ることができるように、電磁波及び電位差により生じる
気持ち悪い状態をより完全に除去するマットの電磁波遮
蔽装置を提供することである。
SUMMARY OF THE INVENTION It is an object of the present invention to provide a matte electromagnetic wave shielding device capable of more completely removing an unpleasant condition caused by an electromagnetic wave and a potential difference so that the patient can sleep comfortably and have a good rest.

【0004】[0004]

【課題を解決するための手段】上記目的を達成するた
め、本発明のマットの電磁波遮蔽装置は、遮蔽布と発熱
体からなるマットの電磁波遮蔽装置において、2つの電
源端子と1つの接地端子を有する3線の電源コードと、
リレーを有し、電位差を感知する時に上記リレーをオン
にすることによって、上記電源コードを通じて上記マッ
トへ印加される電圧を遮断するリレー部と、上記電源コ
ードの電源端子に接続され、電位差を感知するときに安
定した電圧を得るようにするために1次、2次電源が分
離されている変圧器と、ブリッジ整流回路とフィルタ回
路を有し、上記遮蔽布に誘導される交流成分の電位差を
直流に変換する入力電源電位差感知部と、リレーを有
し、上記電源コードが挿入されるコンセントのアース接
地の有無を感知する電源コンセント接地有無感知部と、
上記入力電源電位差感知部によって直流に変換された電
位差の変化幅を読み取って所定の記憶領域に記憶すると
共に、上記電源コンセント接地有無感知部によってアー
ス接地がされていると判断された場合には、上記遮蔽布
に誘導される電界をグラウンド端子に自動的に連結して
電界を減少させ、アース接地がされていないと判断され
た場合には、グラウンド電位と同一電位を仕立てて接地
させて上記遮蔽布に誘導される電界を減少させる制御手
段とを備える。また、上記構成のマットの電磁波遮蔽装
置において、上記遮蔽布と発熱体との間に5mm以上の
厚さの絶縁体を更に備えることが好ましい。
In order to achieve the above object, an electromagnetic wave shielding device for a mat according to the present invention is a mat electromagnetic wave shielding device comprising a shielding cloth and a heating element, in which two power supply terminals and one ground terminal are provided. A three-wire power cord,
It has a relay and is connected to the power source terminal of the power cord and a relay part for cutting off the voltage applied to the mat through the power cord by turning on the relay when sensing the potential difference, and sensing the potential difference. In order to obtain a stable voltage at the time of charging, it has a transformer in which the primary and secondary power sources are separated, a bridge rectifier circuit and a filter circuit, and the potential difference of the AC component induced in the shielding cloth is An input power supply potential difference detection unit for converting to DC, a relay, and a power outlet ground presence / absence detection unit for detecting the presence / absence of earth ground of an outlet into which the power cord is inserted,
When the change width of the potential difference converted to direct current by the input power source potential difference sensing unit is read and stored in a predetermined storage area, and when it is determined that the power outlet grounding presence / absence sensing unit is grounded, If it is judged that the electric field induced by the above-mentioned shield cloth is automatically connected to the ground terminal to reduce the electric field and the earth is not grounded, the same potential as the ground potential is prepared and grounded. Control means for reducing the electric field induced in the cloth. In the matte electromagnetic wave shielding device having the above structure, it is preferable that an insulating material having a thickness of 5 mm or more is further provided between the shielding cloth and the heating element.

【0005】[0005]

【発明の実施の形態】以下、添付の図面を参照して、本
発明のマットの電磁波遮蔽装置の実施形態について説明
する。図1は、マットの電磁波遮蔽装置の実施形態の回
路図である。図1において、参照番号10は、電源端子
L1,L2と接地端子L3を有する3線の電源コードを
示す。参照番号20は、リレーK1−A,K1−Bを有
し、電位差を感知する時に上記電源コード10を通じて
マットへ印加される電圧を遮断するリレー部を示す。参
照番号30は、上記電源コード10の電源端子L1,L
2に接続され、電位差を感知するときに安定した電圧を
得るようにするために1次、2次電源が分離されている
変圧器を示す。参照番号40は、ブリッジ整流回路BD
1と抵抗R及びコンデンサCよりなるフィルタ回路を有
し、遮蔽布60aに誘導される交流成分の電位差を直流
に変換する入力電源電位差感知部を示す。参照番号50
は、リレーK2,K3,K4を有し、上記電源コード1
0が挿入されるコンセントのアース接地の有無を感知す
る電源コンセント接地有無感知部を示す。参照番号60
は、遮蔽布60a、発熱体60c及び絶縁体60bから
なる遮蔽布/発熱体部を示す。マイクロコントローラ7
0は、後に詳しく説明するように、上記入力電源電位差
感知部40によって直流に変換された電位差の変化幅を
読み取って所定の記憶領域に記憶すると共に、上記電源
コンセント接地有無感知部50によってアース接地がさ
れていると判断した場合には、上記遮蔽布60aに誘導
される電界をグラウンド端子に自動的に連結して電界を
減少させ、アース接地がされていないと判断した場合に
は、グラウンド電位を同一電位を仕立てて接地して上記
遮蔽布60aに誘導される電界を減少させる。上記のよ
うな構成の電磁波遮蔽装置の特徴は、接地端子を有する
3線の電源コード10を用いると共に、1次、2次電源
が分離された変圧器30を用いることで、より安定した
電圧を確保し、正確な電位差を検出するようにしている
点である。この処理を実行する際、マットに供給する電
源をリレー部20又は半導体素子(図示せず)で完全に
遮断するようにしていて、入力電源電位差感知部40を
通じて入力電源間の電位差を読取り、また、電源コンセ
ントのアース接地有無感知部50を通じて接地方法を選
択して遮蔽布60aに誘導される電界をアース接地する
ようにしている。また、誤動作の時にエラー検出を行な
うエラー検出回路(図示せず)を設置することによっ
て、正確な動作をするようにしている。本電磁波遮蔽装
置のもう一つの特徴は、発熱体60cと遮蔽布60aに
よって挟まれる絶縁体60bの厚さを5mm以上にして
接地効果を高めることである。上記の制御は、マイクロ
コントローラ70を用いて次々に実行することができ
る。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of an electromagnetic wave shielding device for a mat according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a circuit diagram of an embodiment of an electromagnetic wave shielding device for a mat. In FIG. 1, reference numeral 10 indicates a three-wire power cord having power terminals L1 and L2 and a ground terminal L3. Reference numeral 20 denotes a relay unit having relays K1-A and K1-B, which cuts off a voltage applied to the mat through the power cord 10 when detecting a potential difference. Reference numeral 30 is the power supply terminals L1 and L of the power supply cord 10.
2 shows a transformer connected to 2 and having primary and secondary power supplies separated to obtain a stable voltage when sensing the potential difference. Reference numeral 40 is a bridge rectifier circuit BD
1 shows an input power source potential difference sensing unit which has a filter circuit composed of 1 and a resistor R and a capacitor C, and converts the potential difference of the AC component induced in the shielding cloth 60a into DC. Reference number 50
Has relays K2, K3, K4, and the above power cord 1
2 shows a power outlet grounding presence / absence detecting unit that senses presence / absence of grounding of an outlet into which 0 is inserted. Reference number 60
Indicates a shield cloth / heater portion including a shield cloth 60a, a heating element 60c, and an insulator 60b. Micro controller 7
As will be described later in detail, 0 reads the change width of the potential difference converted to direct current by the input power source potential difference sensing unit 40 and stores it in a predetermined storage area, and the power outlet grounding presence / absence sensing unit 50 grounds it. When it is determined that the grounding is done, the electric field induced in the shielding cloth 60a is automatically connected to the ground terminal to reduce the electric field, and when it is determined that the earth is not grounded, the ground potential is set. Are grounded with the same potential to reduce the electric field induced in the shielding cloth 60a. The electromagnetic wave shielding device configured as described above is characterized by using the three-wire power cord 10 having a grounding terminal and using the transformer 30 in which the primary and secondary power sources are separated from each other. This is a point that is ensured and an accurate potential difference is detected. When this process is executed, the power supplied to the mat is completely cut off by the relay unit 20 or the semiconductor device (not shown), and the potential difference between the input power sources is read through the input power source potential difference sensing unit 40. A grounding method is selected through the grounding presence / absence detecting unit 50 of the power outlet to ground the electric field induced in the shielding cloth 60a. In addition, an error detection circuit (not shown) for detecting an error in case of a malfunction is installed to ensure accurate operation. Another feature of the electromagnetic wave shielding device is that the thickness of the insulator 60b sandwiched between the heating element 60c and the shielding cloth 60a is 5 mm or more to enhance the grounding effect. The above control can be executed one after another using the microcontroller 70.

【0006】図2及び図3は、マイクロコントローラ7
0の実行する処理のフローチャートである。以下、図2
及び図3を参照しつつ、上記構成のマットの電磁波遮蔽
装置の動作を説明する。 1)マイクロコントローラ70の初期電源が投入される
と、電源が印加されたことを発信音を3回鳴らして知ら
せ、電位差を読み取るためにリレーK1−A,K1−B
(以下、この2つをまとめてリレーK1という)をオン
にしてマットに印加される電源の2つの線を全て遮断す
る(ステップS1)。 2)入力される電源を各々L1,L2とし、マットの上
段に敷いてある遮蔽布60aに連結された端子をL4と
し、アース接地の有無の解らない電源プラグに連結され
た接地線をL3とする場合において、L4を基準として
各端子間における電位を感知して誘導される交流(A
C)成分の電位差を直流(DC)に変換した後に、マイ
クロコンピュータ70によってその変化幅を読み取って
記憶できるようにする。 3)この過程で接地効果をより高めるには、遮蔽布60
aと発熱体60cとの間隔を5mm以上にするのが好ま
しい。次に、接地方法の選択について説明する。 1)接地方法を選択するために、まず、リレーK1をオ
ンに切り換える。これにより、マットに印加される電源
を完全に遮断する。そして、電位差を感知することがで
きるようにリレーK5(即ち、リレーK5−A,K5−
B)をオンにして、入力電源を入力電源電位差感知部4
0へ入力する(ステップS2)。 2)まず、K2をオンにし、入力電源L1と遮蔽布60
aの端子L4との間の電位差を感知し、これをAとする
(ステップS3)。そして、同一の状態を維持したまま
でK4をオンて、アース接地L3を入力電源L1に平列
に接地させて変換された電位差をBとする(ステップS
4)。この時、電位差Bが電位差Aの半分以下に減少し
た場合には(ステップS5でYES)、電源コンセント
10にアース接地がされていると判断して、リレーK2
をオフにして、入力電源L1を遮断すると共に、リレー
K4をオンにして遮蔽布60aの端子L4を端子L3に
接続してアース接地する(ステップS6)。 3)電位差Bが電位差Aの半分以下に減少しない場合
(ステップS5でNO)、リレーK2,K4を共にオフ
にし、更に、リレーK3をオンにして、入力電源L2と
遮蔽布60aの端子L4との間の電位差を感知してCと
する(ステップS7)。更に同一の状態を維持したまま
リレーK4をオンにして、接地線L3を入力電源L2に
接続させて変換された電位差をDとする(図3、ステッ
プS8)。この時、電位差Dが電位差Cの半分以下に減
少した場合には(ステップS9でYES)、電源コンセ
ントにアース接地がされてあると判断して、リレーK3
をオフにして入力電源L2を遮断すると共に、リレーK
4をオンにして遮蔽布60aの端子L4をアース接地す
る(ステップS10)。 4)電位差Dが電位差Cの半分以下に減少しない場合
(ステップS9でNO)、電源コンセントにアース接地
がされていないと判断する。ここで、電位差A及び電位
差Cの差が0.5V以上の場合には(ステップS11で
YES)、電源L1及び電源L2の構成がグラウンド電
位を含んでいると判断してグラウンド電位と同一電位を
見つけ遮蔽布60aの端子L4を接地させる。ここで、
電位差Aが電位差Cよりも大きい場合(ステップS12
でYES)、入力電源L2の電位がグラウンド電位とほ
ぼ同一の電位であると判断して、リレーK3をオンにし
て遮蔽布60aの端子L4に誘導される電界をL2に流
す(ステップS13)。一方、電位差Aが電位差C以下
の値の場合(ステップS12でNO)、入力電源L1の
電位がグラウンド電位とほぼ同一の電源であると判断し
て、リレーK2をオンに切り換えて遮蔽布60aの端子
L4に誘導される電界をL1に流す(ステップS1
5)。 5)電位差A及び電位差Bの差が0.5Vに満たない場
合(ステップS11でNO)、入力電源L1とL2の構
成がグラウンド電位を含んでいないと判断し、2個の入
力電源L1,L2を互いに接続させ、中点をとり、遮蔽
布60aの端子L4に接続する(ステップS14)。 6)各端子間における電位を感知して誘導される交流
(AC)成分の電位差を直流(DC)成分に変換した後
に、マイクロコントローラ70でその変化幅を読み取
り、上述した方法により与えられる接地方法の選択処理
が終了すると、リレーK1をオフに切り換えてマットに
電源を投入する準備を行うと共に、リレーK5をオフに
切り換えて遮蔽布60aの端子L4を接地状態にする
(ステップS16)。 7)接地が完了すると、接地方法を特定の信号で表示し
た後に、完了発信音を送出する(ステップS17)。
2 and 3 show a microcontroller 7
It is a flowchart of the process which 0 performs. Hereinafter, FIG.
The operation of the electromagnetic wave shielding device for the mat having the above structure will be described with reference to FIGS. 1) When the initial power supply of the microcontroller 70 is turned on, the relays K1-A and K1-B are used to notify the application of the power supply by emitting a beep sound three times and reading the potential difference.
(Hereinafter, these two are collectively referred to as a relay K1) is turned on to cut off all two lines of the power source applied to the mat (step S1). 2) Input power sources are L1 and L2, respectively, the terminal connected to the shield cloth 60a laid on the upper stage of the mat is L4, and the ground wire connected to the power plug whose grounding is not known is L3. In this case, the induced alternating current (A
After the potential difference of the component C) is converted into direct current (DC), the change width can be read and stored by the microcomputer 70. 3) To enhance the grounding effect in this process, the shield cloth 60
The distance between a and the heating element 60c is preferably 5 mm or more. Next, selection of the grounding method will be described. 1) To select the grounding method, first switch on relay K1. This completely shuts off the power applied to the mat. Then, the relay K5 (that is, the relays K5-A, K5-
B) is turned on and the input power source is connected to the input power source potential difference sensing unit 4
Input 0 (step S2). 2) First, turn on K2, and then input power source L1 and shielding cloth 60.
The potential difference between the terminal a and the terminal L4 of a is sensed, and this is set to A (step S3). Then, while keeping the same state, K4 is turned on, the grounding ground L3 is grounded in parallel with the input power supply L1, and the converted potential difference is set to B (step S
4). At this time, when the potential difference B decreases to less than half the potential difference A (YES in step S5), it is determined that the power outlet 10 is grounded, and the relay K2 is connected.
Is turned off to cut off the input power supply L1, and the relay K4 is turned on to connect the terminal L4 of the shielding cloth 60a to the terminal L3 and ground the earth (step S6). 3) When the potential difference B does not decrease to less than half the potential difference A (NO in step S5), both the relays K2 and K4 are turned off, and the relay K3 is turned on to connect the input power source L2 and the terminal L4 of the shielding cloth 60a. The potential difference between the two is sensed and set as C (step S7). Further, while keeping the same state, the relay K4 is turned on, the ground line L3 is connected to the input power source L2, and the converted potential difference is D (FIG. 3, step S8). At this time, when the potential difference D is reduced to less than half of the potential difference C (YES in step S9), it is determined that the power outlet is grounded, and the relay K3 is connected.
Is turned off to cut off the input power supply L2 and the relay K
4 is turned on and the terminal L4 of the shielding cloth 60a is grounded (step S10). 4) If the potential difference D does not decrease to less than half the potential difference C (NO in step S9), it is determined that the power outlet is not grounded. Here, when the difference between the potential difference A and the potential difference C is 0.5 V or more (YES in step S11), it is determined that the configurations of the power supply L1 and the power supply L2 include the ground potential, and the same potential as the ground potential is set. Find and ground the terminal L4 of the shield cloth 60a. here,
When the potential difference A is larger than the potential difference C (step S12
YES), it is determined that the potential of the input power source L2 is substantially the same as the ground potential, and the relay K3 is turned on to flow the electric field induced in the terminal L4 of the shield cloth 60a to L2 (step S13). On the other hand, when the potential difference A is less than or equal to the potential difference C (NO in step S12), it is determined that the potential of the input power source L1 is substantially the same as the ground potential, and the relay K2 is turned on to turn on the shield cloth 60a. The electric field induced at the terminal L4 is passed through L1 (step S1
5). 5) When the difference between the potential difference A and the potential difference B is less than 0.5 V (NO in step S11), it is determined that the configurations of the input power supplies L1 and L2 do not include the ground potential, and the two input power supplies L1 and L2 are included. Are connected to each other, the middle point is taken, and they are connected to the terminal L4 of the shielding cloth 60a (step S14). 6) After converting the potential difference of the alternating current (AC) component induced by sensing the potential between the terminals into the direct current (DC) component, the variation width is read by the microcontroller 70, and the grounding method provided by the above-described method When the selection process is completed, the relay K1 is turned off to prepare for turning on the mat, and the relay K5 is turned off to bring the terminal L4 of the shielding cloth 60a into the grounded state (step S16). 7) When the grounding is completed, a completion signal is sent after displaying the grounding method with a specific signal (step S17).

【0007】[0007]

【発明の効果】以上で説明したように、本発明のマット
の電磁波遮蔽装置によれば、電磁波及び電位差によりマ
ットに生じる気持ち悪い状態をより完璧に除去すること
ができる。これにより、安楽な就寝及び休息をとること
ができる。
As described above, according to the electromagnetic wave shielding device for a mat of the present invention, it is possible to more completely eliminate the unpleasant state caused on the mat by the electromagnetic wave and the potential difference. As a result, comfortable sleeping and rest can be taken.

【図面の簡単な説明】[Brief description of drawings]

【図1】 本発明のマットの電磁波遮蔽装置の構成を示
す図である。
FIG. 1 is a diagram showing a configuration of an electromagnetic wave shielding device for a mat according to the present invention.

【図2】 マイクロコントローラの実行する制御処理の
フローチャートである。
FIG. 2 is a flowchart of control processing executed by a microcontroller.

【図3】 マイクロコントローラの実行する制御処理の
フローチャートである。
FIG. 3 is a flowchart of control processing executed by a microcontroller.

【符号の説明】[Explanation of symbols]

10…接地端子を有する3線の電源コード 20…リレー部 30…1次、2次電源が分離された変圧器 40…入力電源電位差感知部 50…電源コンセント接地有無感知部 60…遮蔽布/発熱体部 60a…遮蔽布 60b…絶縁体 60c…発熱体 70…マイクロコントローラ BD1,BD2…ブリッジ整流回路 K1−A,K1−B,K2,K3,K4,K5−A,K
5−B…リレー
10 ... 3-wire power cord having a ground terminal 20 ... Relay section 30 ... Transformer with separated primary and secondary power sources 40 ... Input power source potential difference sensing section 50 ... Power outlet ground presence / absence sensing section 60 ... Shielding cloth / heating Body part 60a ... Shielding cloth 60b ... Insulator 60c ... Heating element 70 ... Microcontroller BD1, BD2 ... Bridge rectifier circuit K1-A, K1-B, K2, K3, K4, K5-A, K
5-B ... relay

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 遮蔽手段と発熱手段からなるマットの電
磁波遮蔽装置において、 2つの電源端子と1つの接地端子を有する3線の電源コ
ードと、 リレーを有し、電位差を感知する時に上記リレーをオン
にすることにより、上記電源コードを通じて上記マット
へ印加される電圧を遮断するリレー部と、 上記電源コードの電源端子に接続され、電位差を感知す
る時に安定した電圧を得るようにするために、1次、2
次電源が分離されている変圧器と、 ブリッジ整流回路とフィルタ回路を有し、上記遮蔽手段
に誘導される交流成分の電位差を直流に変換する入力電
源電位差感知部と、 リレーを有し、上記電源コードが挿入されるコンセント
のアース接地の有無を感知する電源コンセント接地有無
感知部と、 上記入力電源電位差感知部によって直流に変換された電
位差の変化幅を読み取って所定の記憶領域に記憶すると
共に、上記電源コンセント接地有無感知部によってアー
ス接地されていると判断された場合には、上記遮蔽手段
に誘導される電界をグラウンド端子に自動的に連結して
電界を減少させ、アース接地がされていないと判断され
た場合には、グラウンド電位と同一電位を仕立てて接地
させて上記遮蔽手段に誘導される電界を減少させる制御
手段とを具備したことを特徴とするマットの電磁波遮蔽
装置。
1. An electromagnetic wave shielding device for a mat, comprising shielding means and heat generating means, comprising a three-wire power cord having two power supply terminals and one grounding terminal, and a relay, wherein the relay is used when sensing a potential difference. In order to obtain a stable voltage when a potential difference is sensed, the relay unit is connected to the power supply terminal of the power cord by turning on the relay unit that cuts off the voltage applied to the mat through the power cord. Primary, 2
A transformer having a secondary power source separated, a bridge rectifier circuit and a filter circuit, an input power source potential difference sensing unit for converting a potential difference of an AC component induced in the shielding means into a direct current, and a relay, A power outlet ground presence / absence detecting unit for detecting the presence / absence of grounding of an outlet into which a power cord is inserted, and a variation range of the potential difference converted to direct current by the input power source potential difference sensing unit are read and stored in a predetermined storage area. When it is determined by the power outlet grounding presence / absence detection unit that the earth is grounded, the electric field induced in the shielding means is automatically coupled to the ground terminal to reduce the electric field, and the earth is grounded. If it is determined that there is not, a control means for tailoring the same potential as the ground potential and grounding it to reduce the electric field induced in the shielding means. Electromagnetic shielding device of the mat, characterized by comprising a.
【請求項2】 上記遮蔽手段と発熱手段との間に5mm
以上の厚さの絶縁体を更に具備したことを特徴とする請
求項1に記載のマットの電磁波遮蔽装置。
2. The distance between the shielding means and the heat generating means is 5 mm.
The electromagnetic wave shielding device for a mat according to claim 1, further comprising an insulator having the above thickness.
JP8291574A 1995-11-01 1996-11-01 Device for shielding electromagnetic wave of mat Pending JPH09197073A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR2019950031937U KR970025470U (en) 1995-11-01 1995-11-01 Mat electromagnetic shield
KR1995-31937 1995-11-01

Publications (1)

Publication Number Publication Date
JPH09197073A true JPH09197073A (en) 1997-07-31

Family

ID=60906052

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8291574A Pending JPH09197073A (en) 1995-11-01 1996-11-01 Device for shielding electromagnetic wave of mat

Country Status (3)

Country Link
JP (1) JPH09197073A (en)
KR (1) KR970025470U (en)
CN (1) CN1102018C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20040047490A (en) * 2002-12-02 2004-06-05 주식회사 한빛일렉콤 Electron wave interception apparatus
KR100566522B1 (en) * 2002-01-29 2006-03-31 (주)해피의료기 Shield device for electromagnetic wave
CN116533260A (en) * 2023-04-28 2023-08-04 上海长征医院 Anti-interference method of vein anesthesia robot system for ship

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100552150B1 (en) * 2004-06-12 2006-02-13 도성 황 An electromagnetic waves and guidance Volt blockade device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100566522B1 (en) * 2002-01-29 2006-03-31 (주)해피의료기 Shield device for electromagnetic wave
KR20040047490A (en) * 2002-12-02 2004-06-05 주식회사 한빛일렉콤 Electron wave interception apparatus
CN116533260A (en) * 2023-04-28 2023-08-04 上海长征医院 Anti-interference method of vein anesthesia robot system for ship
CN116533260B (en) * 2023-04-28 2024-04-09 上海长征医院 Anti-interference method of vein anesthesia robot system for ship

Also Published As

Publication number Publication date
KR970025470U (en) 1997-06-20
CN1102018C (en) 2003-02-19
CN1159138A (en) 1997-09-10

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